CFD Predictions in Large Mechanically Aerated Lagoons

Stropky, Dave; Nowak, P.; Dong, Suqin; Pougatch, Konstantin; Salcudean, M.; Pagoria, P. S.; Barkley, William A.; Bryant, Cliff

doi:10.2175/193864707786831561

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“…Attempts to extend the simple approach just enough to roughly estimate key complexities of partial suspension have been doi: 10.2166/wst.2010.934 documented (NCASI 1985(NCASI , 2004(NCASI , 2006Sackellares et al 1987;Bryant 1994Bryant , 1995. A team from Canada and the United States has recently reported on the application of computational fluid dynamics to model actual ASB hydraulics (Stropky et al 2007a) and to combine a simple biological model with the CFD hydraulics (Stropky et al 2007b).…”

Section: Introductionmentioning

confidence: 99%

Updating a model of pulp and paper wastewater treatment in a partial-mix aerated stabilization basin system

Bryant¹

2010

Water Science and Technology

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A relatively simple set of calculations was presented in 1994 to evaluate the effectiveness of each ASB cell as reactor, clarifier, and digester. The steady-state model, which incorporated estimates of solids settling and benthal feedback of BOD5 and nutrients, has been a reasonable diagnostic tool for municipal and industrial applications. Results have aided in understanding normal system function, the nature of chronic inefficiencies of individual systems, and appropriate modifications to meet changes in discharge requirements. For applications in the pulp and paper industry, several changes have been incorporated recently. Nitrogen limitation is not needed in modeling pulp and paper ASB reactions. Slowly biodegradable material is modeled as a contributor to soluble BOD5, and this contribution becomes a significant factor in the latter segments of an ASB. Phosphorus availability is modeled as a stoichiometric control of soluble BOD5 uptake. Anoxic microorganisms are assumed to be responsible for a portion of the soluble BOD5 consumption in the first ASB aeration zone. Finally, the long-term nutrient capture in ASBs is modeled as 3% for nitrogen and 28% for phosphorus.

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Section: Introductionmentioning

confidence: 99%

Updating a model of pulp and paper wastewater treatment in a partial-mix aerated stabilization basin system

Bryant¹

2010

Water Science and Technology

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CFD Predictions in Large Mechanically Aerated Lagoons

Cited by 1 publication

References 0 publications

Updating a model of pulp and paper wastewater treatment in a partial-mix aerated stabilization basin system

Updating a model of pulp and paper wastewater treatment in a partial-mix aerated stabilization basin system

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